Wire-drawing die lapping machine



P. BIEBERICH WIRE-DRAWING DIE LAPPING MACHINE Sept. 28, 1948.

5 Sheets-Sheet 1 Filed Aug. 1, 1946 0 INVENTOR.

JWW/ P. BIEBERICH WIRE-DRAWING DIE LAPPING MACHINE Sept. 28, 1948.

Filed Aug. 1, 1946 5 Sheets-Sheet '2 Sept. 28, 1948. P. BIEBERICH 2,450,077

7 WIRE-DRAWING DIE LAPPING MACHINE Filed Aug. 1, 1946 5 Sheets-Sheet 3 vlifomze Patented Sept. 28, 1948 U NI TED S TATES PATE N T OFFICE DIE PauLBieberich, Fort Wayne, Ind.

Application August 1, 1946, SeriaINDJGBZfRZ 7 Claims.

This invention relates to improvements in -'a wire-drawing die lapping machine by which the Wall surrounding the pierced opening 'i'n 'the die is definitely shaped.

the practice of drawing wire, ordinarily, there i's'u'sed a die consisting of a retfractory die body imbedded within a metal encasement there for constituting a compact, which is first pierced to form an opening 'therethrough, and subseq't'iently'the wall-of the pierced opening is dressed by use of 'a lapping machine.

an object of the present invention is to provide a machine by use of which the opening through a compact is shaped precisely to afford tapering ingress and egress openings extending into the compact and a constricted connecting passageway of a definite diameter through the center "of the "refractor die "body.

And a further object of the invention is to afiord an improved means of adjustment by which to vary the relative movements of the swaying parts of the machine.

'Gther objects and advantages of the invention appear in the following description.

An illustrative'em bodiment of the invention is shown'inthe accompanying drawings, in which Fig. '1 is a fragmentar perspective "view of a structure' 'in which the invention is incorporated;

Fig/ 2 is afront elevational view 'of the struc ture shown in Fig. 1;

Fig. 3 is a "vertical elevational view shown in section on th'e'iine m'x of Fig. 2;

Fig. 4 is "a fragmentary side 'elevational view, partially in section and parts omitted, projected from'Fig. 3; "and H255 is -'a detail perspective'view of 'arockiiig finger used in the apparatus. 1

The-illustrative embodiment of the invention consists of a machine in which is provided a spindle having a lapping tool, mounted. for ang'uiar rotation, axial and lateral swaying movements, a die compact mount supported for angular rotation and which has axial alinement with the spindle when the spindle is in vertical position, and mechanism for activating the spindle and mount.

"Ihe machine has "a main frame consisting of a base 6, uprights 1 secured to the base, and a series of transverselydisposed beams 8, -9 and 'lll that are permanently secured union the uprights at points spaced apart from each other. In the base 6 and cross-beam 8 are adjustably secured axially alined bearings H and I2 in which an arbor l 3 is "journaled and which affords support ior th'e'die mount 1 4. "Rotary movement is im- 2 parteii' to the arbor by means ore-pulley ts" and belt 43. en the cross-beam 8 is preferably secured a forwardly 'eirtendingsheif 5 constituting a work-tench.

"Overlapping the cross be'ams "9 and m are *dis posed three upwardly extending 'par'aiiel swingin'g arms ts, I 1, and l a'the-lower ends oi'whic'h are pivotally secured to the crossbeam 9 by means-of corresponding bolts FIB, said arms'being spaced suitabl apart "fromea'ch other. Mounted in "connection with the arms l6 and P8 are forwardly extending brackets 20 "andfll, the bracket 2| f|ci'eiiiiz provided "with a lateral extension *2? hereinafter referred to. -Each or said brackets is secured "to the corresponding swinging arm by means of a bolt 23 that extends lo'osei-y through the-arm *soa's tc permit said arms to swing freely without causing turning movement of the bolts and consequent tilting or the brackets. In the brackets 0 and? I is mounted a rotary cam shaft 24 provided *with a belt and pulley actuating mean 25, and a cam 26 is securea on a medial part of the cam haft and "located "-roetween the brackets. A rock-shaft 21 "is mounted in the brackets on and 2! in "which "it *has -'a*xia1 'movement, and on one end of the rock-shaft is "se oureo a grooved collar '28 hereinafterreferreii to.

A finger 2 9 is 'loosiy mounted upon the rockshaft 12-1, betwe'en collars 31! secured thereon, arranged 'tofhave Tree vertical swinging movement on the rocks'haft and have 'lateraimovernent according'lyasthe'rock-shaft is aiiiaily=reoiprocateii. The iinger has secured on itslunder fac'e 'asprin'g tongue 3 I that is contacted by anad'ju'sting screw 32 threaded through'the finger,the free end oithe tongue "having engagement with the cam 2'6 so that asthe cam-shaft is rotated, vertical swinging "reciprocal movement is imparted to the *finger. 'By turning of the adjusting screw $2 "the finger is elevated oriowemdrlative toth-ecam, accordingly as the adjusting-screw is turned. In the extension 22 of the bracket 2| is secured an actuating arm=33 Toy-means 0f a s'et screw '34, "the outer end of the farm :being 'provi'ded with a roi'eotion 35 which rides in the groove 01? the collar 28, "so that axial reciprocatin g movement is imparted to "the ro'ck-"shaft 21 111 the brackets 10 and 21 with consequent lateral movement or the finger "29wh'en the swinging arms t6, '1 and 18 are activated.

'I'Jp'on the front iace "of the swinging arm in are seoured be'arings 3 5, spaced a'p'art and in verticai "alinem'ent with each other, in which is mounted a-s'pindie 31's?) as to have 'axial reciproeating movement and angular rotation therein,

and on the spindle is secured a pulley 38, preferably located between said bearings and provided with a driving belt 38'. The lower face of the pulley rests upon the tip of the finger 29, the upper face of the tip preferably being arcuate. In this manner the spindle is supported by the finger and is axially reciprocated as the finger is activated.

Movement is imparted to the swinging arms l1 4 and I8 by means of corresponding angular dogs 39 and 40 that are vertically adjustable in a sliding bar 4| which extends loosely through guides 42 secured on the cross-beam ID, the dogs being held in adjusted positions by corresponding setscrews 39'40'. The lower ends of the dogs are bent and project loosely into longitudinal splines 43 made in the back faces of the swinging arms so that when the sliding bar 4| is actuated, the arms are swung upon their pivotal supports to a more or less extent accordingly as the dogs are adjustably lowered or raised. The cam-shaft 24 extends through the brackets on the swinging arms l6 and I8 in which it has angular rotation, and said brackets travel laterally together as the cam-shaft is axially reciprocated. Thus, when the arm I8 is swung upon its pivotal support the bracket 2| is laterally moved causing like movement to be imparted to the other bracket 29 through the medium of the cam-shaft, whereupon the arm IB is caused to swing in parallelism with the arm l8. During the swinging actions of the arms and the consequent lateral swaying movement of the brackets 20 and 2|, the rockshaft is axially reciprocated in the brackets through the medium of the actuating arm 33 and the slotted collar 35, and in this manner the finger 29 on the rock-shaft is laterally moved so that the arcuate face of the finger tip is kept constantly in proper contact with the spindle pulley 38 While the finger is actuated by the cam 26.

Movement is imparted to the sliding bar 4|' by means of a lever 44 that is fulcrumed on a stud 45 which projects rearwardly from the outwardly extending end of the cross-beam 8. The upper end of the lever has an adjustable extension 46 that is pivotally connected with the extending end of the slide-bar, the lower end of said lever having a roller 4'! that extends into a grooved cam 48 disposed on a rotary drive-shaft 49 that is journaled in bearings 49' and which is provided with abelt and pulley actuating means 49". By this means reciprocating movement is imparted to the slide-bar, the arms and spindle are swung and the spindle is axially reciprocated, when the drive-shaft is actuated.

The drive-shaft 49, drive pulley 25, arbor pulley l3 and the spindle pulley 38 are activated simultaneously by any suitable means, such as by belts connected with an ordinary source of power (not shown), as in the usual manner.

Operation In operating the invention, a pierced die compact 50 is centered in position on the mount l4 and secured thereon, as in the usual practice, and a lapping needle 5| is secured to the lower end of the spindle 31 with its free end projecting into the pierced compact, after which the machine is set into action by the motion transmitting mechanism provided therefor. By vertically adjusting the dog 39 the lateral sway of the arm I! and the spindle 31 supported in connection therewith is varied in extent more or less accordingly as desired by the operator. Then, by adjustment of the dog 40 the swing of the arms I8 and I6 is varied more or less until the lateral movement of the finger corresponds precisely with the lateral sway of the spindle pulley 38. By adjustment of the extension 46 on its actuating lever 44, the range of the swinging movement of the spindle supporting arm is centralized with respect to the position where alinement of the spindle and the die mount occurs, viz: the lateral sway of the spindle in opposite directions from its position when axially alined with the die mount is equalized, thus assuring accuracy in carrying out the lapping operation. By manipulating the adjusting screw 32, the range of the reciprocal movement of the spindle is adjustably raised or lowered more or less accordingly as the adjusting screw is turned, and the lapping needle consequently protrudes to a lesser or greater extent into the pierced compact as desired by the operator.

Variations from the particular construction above disclosed may be resorted to by the exercise of skill in the art, without departure from the spirit or scope of the invention.

What I claim is:-

l. A wire-drawing die lapping machine consisting of a supporting frame, a series of arms pivoted on said frame for lateral swinging movement, a rotary arbor mounted in bearings on said frame provided with a die mount and a pulley, a spindle mounted in hearings on one of said arms, having axial reciprocating and rotary movement and provided with another pulley, brackets pivotally mounted respectively on the other arms. a cam shaft extending through said brackets having rotary movement therein and provided with a cam secured thereon between said brackets, a rockshaft extending through said brackets havin axial movement therein and provided with a grooved collar, an actuating arm on one of said brackets engaging said collar to activate the rockshaft axially, a finger loosely mounted on the rockshaft operatively connected with said spindle to reciprocate same through the medium of said cam, a sliding bar having reciprocating movement in guides on the frame and provided with adjustable dogs that engage in splines in certain of said arms respectively, a mechanism for activating said sliding bar, and motion transmitting means to rotate the cam shaft, the arbor and said spindle.

2. A wire-drawing die lapping machine consisting of a supporting frame, arms pivoted on said frame for lateral swinging movement, a rotary die mount supported in bearings in said frame, a spindle, provided with a needle, mounted in bearings on one of said arms having rotary and axial movement relative thereto, a sliding bar having guided movement in said frame and provided with actuating mechanism therefor, dogs adjustably secured on said bar and having engagement with certain of said arms whereby to impart movement thereto when the sliding bar is actuated, a bracket pivotally mounted on each of said other bars, a shaft mounted in said brackets axially movable therein and having a collar engaged by an actuating arm on one of said brackets, a finger mounted on the shaft operatively connected with said spindle to axially reciprocate same, a rotary cam shaft mounted in said brackets operatively engaged with said finger, and motion transmitting means forsaid activatingmechanism, die, mount, spindle and cam shaft.

3. In a wire-drawing die lapping machine, a main frame, a bar having guided sliding movement therein and provided with adjustable dogs,

a die mount provided with an arbor rotatably mounted in said frame, a spindle-supporting arm pivoted in the frame provided with a spindle supported thereby for axial and rotary movement, said arm being engaged by one of said dogs to be actuated thereby, two other arms pivoted in the frame in juxtaposition with respect to the spindle supporting arm, each being provided with a bracket pivotally connected therewith, one of said other arms having engagement with another of said dogs to be actuated thereby, a rock shaft having axial sliding movement in said brackets provided with a finger loosely mounted thereon that has operative connection with said spindle, an actuating arm on one of said brackets having operative connection with said shaft, a rotary cam shaft supported by said brackets operatively engaging said finger, said spindle having a needle that projects into a compact seated on said mount, and means for activating said bar, arbor, spindle and cam shaft.

4. In a wire-drawing die lapping machine including a frame, a die mount supported on the frame for rotary movement, an arm pivotally supported on the frame for lateral swinging movement, a spindle supported in connection with said arm for rotary and axial reciprocating movement provided with a lapping needle that projects into a compact seated on said mount, two other arm in juxtaposition with the spindle-supporting arm pivotally supported in said frame for lateral swinging movement, each having a supported bracket thereon, a shaft mounted in said brackets, axially moveable relative thereto, and having thereon a tilting finger operatively connected with said spindle, another shaft rotatably mounted in said brackets, axially movable therewith and provided with a cam engaging said finger to actuate same, an actuating arm on one of said. brackets operatively connected with the first-mentioned shaft, a bar mounted to have guided. sliding move ment in the frame provided with activating means therefor, a dog adjustably mounted in said bar engaging the spindle-supporting arm, another dog adjustable in said bar engaging one of said other arms, and means for activating the mount, spindle, and said other shaft, the arrangement being such that by adjustment of said dogs the swinging strokes of said spindle-supporting arm and said other arms are relatively varied.

5. In a wire-drawing die lapping machine including a frame, an arm pivotally supported for lateral swaying movement and having supported on the frame in connection therewith a rotary reciprocating spindle provided with a lapping needle, a die mount supported on the frame for rotary movement axially alined with said spindle when the spindle is in midposition with respect to its swaying stroke, other arms pivotally supported in juxtaposition with the first-mentioned arm, each having thereon a pivoted bracket, a tilting finger supported in connection with said brackets connectedly related with said spindle adapted to impart thereto axial movement, a reciprocating sliding bar provided with independently adjustable dogs engaged respectively with the firstmentioned arin and one of said other arms whereby to independently vary the relative swaying movements thereof, and means to activate the spindle, die mount, finger and said bar.

6. A wire-drawing die lapping machine including a supporting frame, arms pivotally mounted on the frame for lateral swaying movement, a spindle supported in connection with one arm, having rotary and axial reciprocating movements, and provided with a lapping needle, a rotary die mount supported in the frame, axially alined with Y the spindle when the spindle is in midposition, brackets pivotally supported in connection with the other of said arms, having mounted therein two shafts, one of which has axial reciprocating movement in said brackets and the other shaft having rotary movement therein, a member on one of said brackets having operative connection with the reciprocal shaft to actuate same, a tilting'finger on the reciprocal shaft having operating connnection with the spindle to impart axial movement thereto, means on the rotary shaft for actuating said finger, actuating mechanism having adjustable dogs engaged with certain of said arms respectively to impart more or less movement thereto, independently, according to adjustment of the individual dogs, and means for activating said mechanism, spindle, arbor and the rotary shaft.

7. A wire-drawing die lapping machine consisting of a supporting frame, arms pivotally supported on the frame for lateral swaying movement, a rotary and axially reciprocal spindle, provided with a needle, mounted in connection with one of said arms, mechanism supported in connection with the other arms provided with a member having operative connection with the spindle adapted to impart axial movement thereto, a reciprocating bar having actuating means therefor and provided with adjustable connections engaged respectively with said one arm and one of said other arms whereby to independently impart swaying movement thereto when said bar is actuated, a mount rotatably supported in said frame positioned beneath said spindle so that a compact when seated upon the mount is adapted to receive said needle, and means for activating said mechanism, bar, spindle and mount.

PAUL BIEBERICH.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 819,628 Alton May 1, 1906 1,097,726 Miller et al May 26, 1914 1,758,953 Krause May 20, 1930 1,826,347 Haddow Oct. 6, 1931 1,922,497 Peterson et a1. Aug. 15, 1933 1,922,498 Peterson et al Aug. 15, 1933 2,350,023 Ferrier May 30, 1944 2,388,610 Hanemann Nov. 6, 1945 

